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Finding the Fourth Proportional to 690.00, 951.17 and 503.70

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Solution

The fourth proportional to 690.00, 951.17 and 503.70 is: 694.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    690.00 : 951.17 = 503.70 : x
  2. Step 2: Convert to fraction form
    690.00/951.17 = 503.70/x
  3. Step 3: Cross multiply
    690.00x = 951.17 × 503.70
  4. Step 4: Simplify right side
    690.00x = 479,097.05
  5. Step 5: Solve for x
    x = 479,097.05/690.00
  6. Step 6: Final answer
    x = 694.35

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.