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Finding the Fourth Proportional to 590.32, 815.12 and 380.60

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Solution

The fourth proportional to 590.32, 815.12 and 380.60 is: 525.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.32 : 815.12 = 380.60 : x
  2. Step 2: Convert to fraction form
    590.32/815.12 = 380.60/x
  3. Step 3: Cross multiply
    590.32x = 815.12 × 380.60
  4. Step 4: Simplify right side
    590.32x = 310,234.67
  5. Step 5: Solve for x
    x = 310,234.67/590.32
  6. Step 6: Final answer
    x = 525.54

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1.5x scale

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.