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Finding the Fourth Proportional to 1,088.46, 1,502.04 and 646.26

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Solution

The fourth proportional to 1,088.46, 1,502.04 and 646.26 is: 891.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.46 : 1,502.04 = 646.26 : x
  2. Step 2: Convert to fraction form
    1,088.46/1,502.04 = 646.26/x
  3. Step 3: Cross multiply
    1,088.46x = 1,502.04 × 646.26
  4. Step 4: Simplify right side
    1,088.46x = 970,708.37
  5. Step 5: Solve for x
    x = 970,708.37/1,088.46
  6. Step 6: Final answer
    x = 891.82

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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.