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Finding the Fourth Proportional to 590.55, 813.23 and 528.36

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Solution

The fourth proportional to 590.55, 813.23 and 528.36 is: 727.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.55 : 813.23 = 528.36 : x
  2. Step 2: Convert to fraction form
    590.55/813.23 = 528.36/x
  3. Step 3: Cross multiply
    590.55x = 813.23 × 528.36
  4. Step 4: Simplify right side
    590.55x = 429,675.56
  5. Step 5: Solve for x
    x = 429,675.56/590.55
  6. Step 6: Final answer
    x = 727.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.