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Finding the Fourth Proportional to 688.89, 951.93 and 502.95

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Solution

The fourth proportional to 688.89, 951.93 and 502.95 is: 694.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    688.89 : 951.93 = 502.95 : x
  2. Step 2: Convert to fraction form
    688.89/951.93 = 502.95/x
  3. Step 3: Cross multiply
    688.89x = 951.93 × 502.95
  4. Step 4: Simplify right side
    688.89x = 478,773.19
  5. Step 5: Solve for x
    x = 478,773.19/688.89
  6. Step 6: Final answer
    x = 694.99

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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.