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Finding the Fourth Proportional to 979.00, 1,470.32 and 897.69

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Solution

The fourth proportional to 979.00, 1,470.32 and 897.69 is: 1,348.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    979.00 : 1,470.32 = 897.69 : x
  2. Step 2: Convert to fraction form
    979.00/1,470.32 = 897.69/x
  3. Step 3: Cross multiply
    979.00x = 1,470.32 × 897.69
  4. Step 4: Simplify right side
    979.00x = 1,319,895.95
  5. Step 5: Solve for x
    x = 1,319,895.95/979.00
  6. Step 6: Final answer
    x = 1,348.21

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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.