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Finding the Fourth Proportional to 1,026.71, 1,417.03 and 653.87

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Solution

The fourth proportional to 1,026.71, 1,417.03 and 653.87 is: 902.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,026.71 : 1,417.03 = 653.87 : x
  2. Step 2: Convert to fraction form
    1,026.71/1,417.03 = 653.87/x
  3. Step 3: Cross multiply
    1,026.71x = 1,417.03 × 653.87
  4. Step 4: Simplify right side
    1,026.71x = 926,555.31
  5. Step 5: Solve for x
    x = 926,555.31/1,026.71
  6. Step 6: Final answer
    x = 902.45

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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.