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Finding the Fourth Proportional to 973.71, 1,460.97 and 425.61

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Solution

The fourth proportional to 973.71, 1,460.97 and 425.61 is: 638.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    973.71 : 1,460.97 = 425.61 : x
  2. Step 2: Convert to fraction form
    973.71/1,460.97 = 425.61/x
  3. Step 3: Cross multiply
    973.71x = 1,460.97 × 425.61
  4. Step 4: Simplify right side
    973.71x = 621,803.44
  5. Step 5: Solve for x
    x = 621,803.44/973.71
  6. Step 6: Final answer
    x = 638.59

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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.