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Finding the Fourth Proportional to 712.25, 1,062.85 and 630.23

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Solution

The fourth proportional to 712.25, 1,062.85 and 630.23 is: 940.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    712.25 : 1,062.85 = 630.23 : x
  2. Step 2: Convert to fraction form
    712.25/1,062.85 = 630.23/x
  3. Step 3: Cross multiply
    712.25x = 1,062.85 × 630.23
  4. Step 4: Simplify right side
    712.25x = 669,841.04
  5. Step 5: Solve for x
    x = 669,841.04/712.25
  6. Step 6: Final answer
    x = 940.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.