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Finding the Fourth Proportional to 1,088.58, 1,501.71 and 646.17

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Solution

The fourth proportional to 1,088.58, 1,501.71 and 646.17 is: 891.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.58 : 1,501.71 = 646.17 : x
  2. Step 2: Convert to fraction form
    1,088.58/1,501.71 = 646.17/x
  3. Step 3: Cross multiply
    1,088.58x = 1,501.71 × 646.17
  4. Step 4: Simplify right side
    1,088.58x = 970,349.21
  5. Step 5: Solve for x
    x = 970,349.21/1,088.58
  6. Step 6: Final answer
    x = 891.39

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1.5x scale

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.