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Finding the Fourth Proportional to 1,088.93, 1,502.05 and 646.74

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Solution

The fourth proportional to 1,088.93, 1,502.05 and 646.74 is: 892.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.93 : 1,502.05 = 646.74 : x
  2. Step 2: Convert to fraction form
    1,088.93/1,502.05 = 646.74/x
  3. Step 3: Cross multiply
    1,088.93x = 1,502.05 × 646.74
  4. Step 4: Simplify right side
    1,088.93x = 971,435.82
  5. Step 5: Solve for x
    x = 971,435.82/1,088.93
  6. Step 6: Final answer
    x = 892.10

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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.