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Finding the Fourth Proportional to 585.54, 877.28 and 521.99

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Solution

The fourth proportional to 585.54, 877.28 and 521.99 is: 782.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.54 : 877.28 = 521.99 : x
  2. Step 2: Convert to fraction form
    585.54/877.28 = 521.99/x
  3. Step 3: Cross multiply
    585.54x = 877.28 × 521.99
  4. Step 4: Simplify right side
    585.54x = 457,931.39
  5. Step 5: Solve for x
    x = 457,931.39/585.54
  6. Step 6: Final answer
    x = 782.07

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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.