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Finding the Fourth Proportional to 1,068.59, 1,602.79 and 657.52

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Solution

The fourth proportional to 1,068.59, 1,602.79 and 657.52 is: 986.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,068.59 : 1,602.79 = 657.52 : x
  2. Step 2: Convert to fraction form
    1,068.59/1,602.79 = 657.52/x
  3. Step 3: Cross multiply
    1,068.59x = 1,602.79 × 657.52
  4. Step 4: Simplify right side
    1,068.59x = 1,053,860.83
  5. Step 5: Solve for x
    x = 1,053,860.83/1,068.59
  6. Step 6: Final answer
    x = 986.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.