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Finding the Fourth Proportional to 688.83, 949.55 and 502.03

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Solution

The fourth proportional to 688.83, 949.55 and 502.03 is: 692.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    688.83 : 949.55 = 502.03 : x
  2. Step 2: Convert to fraction form
    688.83/949.55 = 502.03/x
  3. Step 3: Cross multiply
    688.83x = 949.55 × 502.03
  4. Step 4: Simplify right side
    688.83x = 476,702.59
  5. Step 5: Solve for x
    x = 476,702.59/688.83
  6. Step 6: Final answer
    x = 692.05

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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.