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Finding the Fourth Proportional to 590.55, 814.58 and 380.40

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Solution

The fourth proportional to 590.55, 814.58 and 380.40 is: 524.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.55 : 814.58 = 380.40 : x
  2. Step 2: Convert to fraction form
    590.55/814.58 = 380.40/x
  3. Step 3: Cross multiply
    590.55x = 814.58 × 380.40
  4. Step 4: Simplify right side
    590.55x = 309,864.33
  5. Step 5: Solve for x
    x = 309,864.33/590.55
  6. Step 6: Final answer
    x = 524.70

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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.