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Finding the Fourth Proportional to 962.01, 1,328.10 and 630.92

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Solution

The fourth proportional to 962.01, 1,328.10 and 630.92 is: 871.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.01 : 1,328.10 = 630.92 : x
  2. Step 2: Convert to fraction form
    962.01/1,328.10 = 630.92/x
  3. Step 3: Cross multiply
    962.01x = 1,328.10 × 630.92
  4. Step 4: Simplify right side
    962.01x = 837,925.81
  5. Step 5: Solve for x
    x = 837,925.81/962.01
  6. Step 6: Final answer
    x = 871.02

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1.5x scale

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.