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Finding the Fourth Proportional to 552.83, 829.10 and 279.05

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Solution

The fourth proportional to 552.83, 829.10 and 279.05 is: 418.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.83 : 829.10 = 279.05 : x
  2. Step 2: Convert to fraction form
    552.83/829.10 = 279.05/x
  3. Step 3: Cross multiply
    552.83x = 829.10 × 279.05
  4. Step 4: Simplify right side
    552.83x = 231,356.91
  5. Step 5: Solve for x
    x = 231,356.91/552.83
  6. Step 6: Final answer
    x = 418.50

Related Problems

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Half scale
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Double scale
Find fourth proportional to 553.83, 830.60 and 280.05
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.