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Finding the Fourth Proportional to 945.01, 1,304.15 and 630.87

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Solution

The fourth proportional to 945.01, 1,304.15 and 630.87 is: 870.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    945.01 : 1,304.15 = 630.87 : x
  2. Step 2: Convert to fraction form
    945.01/1,304.15 = 630.87/x
  3. Step 3: Cross multiply
    945.01x = 1,304.15 × 630.87
  4. Step 4: Simplify right side
    945.01x = 822,749.11
  5. Step 5: Solve for x
    x = 822,749.11/945.01
  6. Step 6: Final answer
    x = 870.62

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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.