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Finding the Fourth Proportional to 502.04, 692.71 and 315.57

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Solution

The fourth proportional to 502.04, 692.71 and 315.57 is: 435.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.04 : 692.71 = 315.57 : x
  2. Step 2: Convert to fraction form
    502.04/692.71 = 315.57/x
  3. Step 3: Cross multiply
    502.04x = 692.71 × 315.57
  4. Step 4: Simplify right side
    502.04x = 218,597.71
  5. Step 5: Solve for x
    x = 218,597.71/502.04
  6. Step 6: Final answer
    x = 435.42

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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.