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Finding the Fourth Proportional to 633.04, 870.07 and 558.91

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Solution

The fourth proportional to 633.04, 870.07 and 558.91 is: 768.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.04 : 870.07 = 558.91 : x
  2. Step 2: Convert to fraction form
    633.04/870.07 = 558.91/x
  3. Step 3: Cross multiply
    633.04x = 870.07 × 558.91
  4. Step 4: Simplify right side
    633.04x = 486,290.82
  5. Step 5: Solve for x
    x = 486,290.82/633.04
  6. Step 6: Final answer
    x = 768.18

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.