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Finding the Fourth Proportional to 507.53, 700.35 and 402.87

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Solution

The fourth proportional to 507.53, 700.35 and 402.87 is: 555.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.53 : 700.35 = 402.87 : x
  2. Step 2: Convert to fraction form
    507.53/700.35 = 402.87/x
  3. Step 3: Cross multiply
    507.53x = 700.35 × 402.87
  4. Step 4: Simplify right side
    507.53x = 282,151.12
  5. Step 5: Solve for x
    x = 282,151.12/507.53
  6. Step 6: Final answer
    x = 555.93

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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.