Home / 1,042.30-1,564.25-630.19

Finding the Fourth Proportional to 1,042.30, 1,564.25 and 630.19

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Solution

The fourth proportional to 1,042.30, 1,564.25 and 630.19 is: 945.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,042.30 : 1,564.25 = 630.19 : x
  2. Step 2: Convert to fraction form
    1,042.30/1,564.25 = 630.19/x
  3. Step 3: Cross multiply
    1,042.30x = 1,564.25 × 630.19
  4. Step 4: Simplify right side
    1,042.30x = 985,774.71
  5. Step 5: Solve for x
    x = 985,774.71/1,042.30
  6. Step 6: Final answer
    x = 945.77

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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.