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Finding the Fourth Proportional to 585.69, 875.95 and 521.15

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Solution

The fourth proportional to 585.69, 875.95 and 521.15 is: 779.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.69 : 875.95 = 521.15 : x
  2. Step 2: Convert to fraction form
    585.69/875.95 = 521.15/x
  3. Step 3: Cross multiply
    585.69x = 875.95 × 521.15
  4. Step 4: Simplify right side
    585.69x = 456,501.34
  5. Step 5: Solve for x
    x = 456,501.34/585.69
  6. Step 6: Final answer
    x = 779.42

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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.