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Finding the Fourth Proportional to 511.74, 767.43 and 357.74

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Solution

The fourth proportional to 511.74, 767.43 and 357.74 is: 536.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.74 : 767.43 = 357.74 : x
  2. Step 2: Convert to fraction form
    511.74/767.43 = 357.74/x
  3. Step 3: Cross multiply
    511.74x = 767.43 × 357.74
  4. Step 4: Simplify right side
    511.74x = 274,539.38
  5. Step 5: Solve for x
    x = 274,539.38/511.74
  6. Step 6: Final answer
    x = 536.48

Related Problems

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Half scale
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Double scale
Find fourth proportional to 512.74, 768.93 and 358.74
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.