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Finding the Fourth Proportional to 975.40, 1,463.34 and 564.76

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Solution

The fourth proportional to 975.40, 1,463.34 and 564.76 is: 847.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    975.40 : 1,463.34 = 564.76 : x
  2. Step 2: Convert to fraction form
    975.40/1,463.34 = 564.76/x
  3. Step 3: Cross multiply
    975.40x = 1,463.34 × 564.76
  4. Step 4: Simplify right side
    975.40x = 826,435.90
  5. Step 5: Solve for x
    x = 826,435.90/975.40
  6. Step 6: Final answer
    x = 847.28

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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.