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Finding the Fourth Proportional to 1,011.84, 1,516.80 and 498.24

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Solution

The fourth proportional to 1,011.84, 1,516.80 and 498.24 is: 746.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,011.84 : 1,516.80 = 498.24 : x
  2. Step 2: Convert to fraction form
    1,011.84/1,516.80 = 498.24/x
  3. Step 3: Cross multiply
    1,011.84x = 1,516.80 × 498.24
  4. Step 4: Simplify right side
    1,011.84x = 755,730.43
  5. Step 5: Solve for x
    x = 755,730.43/1,011.84
  6. Step 6: Final answer
    x = 746.89

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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.