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Finding the Fourth Proportional to 972.46, 1,459.67 and 510.15

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Solution

The fourth proportional to 972.46, 1,459.67 and 510.15 is: 765.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    972.46 : 1,459.67 = 510.15 : x
  2. Step 2: Convert to fraction form
    972.46/1,459.67 = 510.15/x
  3. Step 3: Cross multiply
    972.46x = 1,459.67 × 510.15
  4. Step 4: Simplify right side
    972.46x = 744,648.23
  5. Step 5: Solve for x
    x = 744,648.23/972.46
  6. Step 6: Final answer
    x = 765.74

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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.