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Finding the Fourth Proportional to 691.76, 953.64 and 544.14

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Solution

The fourth proportional to 691.76, 953.64 and 544.14 is: 750.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    691.76 : 953.64 = 544.14 : x
  2. Step 2: Convert to fraction form
    691.76/953.64 = 544.14/x
  3. Step 3: Cross multiply
    691.76x = 953.64 × 544.14
  4. Step 4: Simplify right side
    691.76x = 518,913.67
  5. Step 5: Solve for x
    x = 518,913.67/691.76
  6. Step 6: Final answer
    x = 750.13

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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.