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Finding the Fourth Proportional to 963.57, 1,330.29 and 632.57

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Solution

The fourth proportional to 963.57, 1,330.29 and 632.57 is: 873.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    963.57 : 1,330.29 = 632.57 : x
  2. Step 2: Convert to fraction form
    963.57/1,330.29 = 632.57/x
  3. Step 3: Cross multiply
    963.57x = 1,330.29 × 632.57
  4. Step 4: Simplify right side
    963.57x = 841,501.55
  5. Step 5: Solve for x
    x = 841,501.55/963.57
  6. Step 6: Final answer
    x = 873.32

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Double scale
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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.