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Finding the Fourth Proportional to 1,023.17, 1,411.53 and 801.23

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Solution

The fourth proportional to 1,023.17, 1,411.53 and 801.23 is: 1,105.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,023.17 : 1,411.53 = 801.23 : x
  2. Step 2: Convert to fraction form
    1,023.17/1,411.53 = 801.23/x
  3. Step 3: Cross multiply
    1,023.17x = 1,411.53 × 801.23
  4. Step 4: Simplify right side
    1,023.17x = 1,130,960.18
  5. Step 5: Solve for x
    x = 1,130,960.18/1,023.17
  6. Step 6: Final answer
    x = 1,105.35

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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.