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Finding the Fourth Proportional to 576.91, 857.95 and 558.68

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Solution

The fourth proportional to 576.91, 857.95 and 558.68 is: 830.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.91 : 857.95 = 558.68 : x
  2. Step 2: Convert to fraction form
    576.91/857.95 = 558.68/x
  3. Step 3: Cross multiply
    576.91x = 857.95 × 558.68
  4. Step 4: Simplify right side
    576.91x = 479,319.51
  5. Step 5: Solve for x
    x = 479,319.51/576.91
  6. Step 6: Final answer
    x = 830.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.