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Finding the Fourth Proportional to 712.53, 987.10 and 695.52

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Solution

The fourth proportional to 712.53, 987.10 and 695.52 is: 963.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    712.53 : 987.10 = 695.52 : x
  2. Step 2: Convert to fraction form
    712.53/987.10 = 695.52/x
  3. Step 3: Cross multiply
    712.53x = 987.10 × 695.52
  4. Step 4: Simplify right side
    712.53x = 686,547.79
  5. Step 5: Solve for x
    x = 686,547.79/712.53
  6. Step 6: Final answer
    x = 963.54

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These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.