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Finding the Fourth Proportional to 951.45, 1,312.79 and 552.98

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Solution

The fourth proportional to 951.45, 1,312.79 and 552.98 is: 762.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.45 : 1,312.79 = 552.98 : x
  2. Step 2: Convert to fraction form
    951.45/1,312.79 = 552.98/x
  3. Step 3: Cross multiply
    951.45x = 1,312.79 × 552.98
  4. Step 4: Simplify right side
    951.45x = 725,950.24
  5. Step 5: Solve for x
    x = 725,950.24/951.45
  6. Step 6: Final answer
    x = 762.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.