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Finding the Fourth Proportional to 1,064.67, 1,602.65 and 758.64

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Solution

The fourth proportional to 1,064.67, 1,602.65 and 758.64 is: 1,141.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,064.67 : 1,602.65 = 758.64 : x
  2. Step 2: Convert to fraction form
    1,064.67/1,602.65 = 758.64/x
  3. Step 3: Cross multiply
    1,064.67x = 1,602.65 × 758.64
  4. Step 4: Simplify right side
    1,064.67x = 1,215,830.60
  5. Step 5: Solve for x
    x = 1,215,830.60/1,064.67
  6. Step 6: Final answer
    x = 1,141.98

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.