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Finding the Fourth Proportional to 591.02, 815.57 and 342.32

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Solution

The fourth proportional to 591.02, 815.57 and 342.32 is: 472.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.02 : 815.57 = 342.32 : x
  2. Step 2: Convert to fraction form
    591.02/815.57 = 342.32/x
  3. Step 3: Cross multiply
    591.02x = 815.57 × 342.32
  4. Step 4: Simplify right side
    591.02x = 279,180.13
  5. Step 5: Solve for x
    x = 279,180.13/591.02
  6. Step 6: Final answer
    x = 472.37

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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.