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Finding the Fourth Proportional to 1,068.18, 1,474.82 and 670.02

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Solution

The fourth proportional to 1,068.18, 1,474.82 and 670.02 is: 925.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,068.18 : 1,474.82 = 670.02 : x
  2. Step 2: Convert to fraction form
    1,068.18/1,474.82 = 670.02/x
  3. Step 3: Cross multiply
    1,068.18x = 1,474.82 × 670.02
  4. Step 4: Simplify right side
    1,068.18x = 988,158.90
  5. Step 5: Solve for x
    x = 988,158.90/1,068.18
  6. Step 6: Final answer
    x = 925.09

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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.