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Finding the Fourth Proportional to 968.60, 1,451.46 and 557.12

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Solution

The fourth proportional to 968.60, 1,451.46 and 557.12 is: 834.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.60 : 1,451.46 = 557.12 : x
  2. Step 2: Convert to fraction form
    968.60/1,451.46 = 557.12/x
  3. Step 3: Cross multiply
    968.60x = 1,451.46 × 557.12
  4. Step 4: Simplify right side
    968.60x = 808,637.40
  5. Step 5: Solve for x
    x = 808,637.40/968.60
  6. Step 6: Final answer
    x = 834.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.