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Finding the Fourth Proportional to 630.81, 945.14 and 501.21

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Solution

The fourth proportional to 630.81, 945.14 and 501.21 is: 750.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.81 : 945.14 = 501.21 : x
  2. Step 2: Convert to fraction form
    630.81/945.14 = 501.21/x
  3. Step 3: Cross multiply
    630.81x = 945.14 × 501.21
  4. Step 4: Simplify right side
    630.81x = 473,711.11
  5. Step 5: Solve for x
    x = 473,711.11/630.81
  6. Step 6: Final answer
    x = 750.96

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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.