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Finding the Fourth Proportional to 1,068.42, 1,602.91 and 452.15

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Solution

The fourth proportional to 1,068.42, 1,602.91 and 452.15 is: 678.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,068.42 : 1,602.91 = 452.15 : x
  2. Step 2: Convert to fraction form
    1,068.42/1,602.91 = 452.15/x
  3. Step 3: Cross multiply
    1,068.42x = 1,602.91 × 452.15
  4. Step 4: Simplify right side
    1,068.42x = 724,751.75
  5. Step 5: Solve for x
    x = 724,751.75/1,068.42
  6. Step 6: Final answer
    x = 678.34

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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.