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Finding the Fourth Proportional to 585.63, 875.87 and 521.09

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Solution

The fourth proportional to 585.63, 875.87 and 521.09 is: 779.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.63 : 875.87 = 521.09 : x
  2. Step 2: Convert to fraction form
    585.63/875.87 = 521.09/x
  3. Step 3: Cross multiply
    585.63x = 875.87 × 521.09
  4. Step 4: Simplify right side
    585.63x = 456,402.30
  5. Step 5: Solve for x
    x = 456,402.30/585.63
  6. Step 6: Final answer
    x = 779.33

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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.