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Finding the Fourth Proportional to 536.75, 740.72 and 303.92

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Solution

The fourth proportional to 536.75, 740.72 and 303.92 is: 419.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.75 : 740.72 = 303.92 : x
  2. Step 2: Convert to fraction form
    536.75/740.72 = 303.92/x
  3. Step 3: Cross multiply
    536.75x = 740.72 × 303.92
  4. Step 4: Simplify right side
    536.75x = 225,118.10
  5. Step 5: Solve for x
    x = 225,118.10/536.75
  6. Step 6: Final answer
    x = 419.41

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Find fourth proportional to 268.38, 370.36 and 151.96
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.