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Finding the Fourth Proportional to 970.64, 1,456.05 and 605.12

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Solution

The fourth proportional to 970.64, 1,456.05 and 605.12 is: 907.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    970.64 : 1,456.05 = 605.12 : x
  2. Step 2: Convert to fraction form
    970.64/1,456.05 = 605.12/x
  3. Step 3: Cross multiply
    970.64x = 1,456.05 × 605.12
  4. Step 4: Simplify right side
    970.64x = 881,077.70
  5. Step 5: Solve for x
    x = 881,077.70/970.64
  6. Step 6: Final answer
    x = 907.73

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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.