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Finding the Fourth Proportional to 1,023.38, 1,412.28 and 581.26

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Solution

The fourth proportional to 1,023.38, 1,412.28 and 581.26 is: 802.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,023.38 : 1,412.28 = 581.26 : x
  2. Step 2: Convert to fraction form
    1,023.38/1,412.28 = 581.26/x
  3. Step 3: Cross multiply
    1,023.38x = 1,412.28 × 581.26
  4. Step 4: Simplify right side
    1,023.38x = 820,901.87
  5. Step 5: Solve for x
    x = 820,901.87/1,023.38
  6. Step 6: Final answer
    x = 802.15

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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.