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Finding the Fourth Proportional to 572.32, 855.92 and 340.56

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Solution

The fourth proportional to 572.32, 855.92 and 340.56 is: 509.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.32 : 855.92 = 340.56 : x
  2. Step 2: Convert to fraction form
    572.32/855.92 = 340.56/x
  3. Step 3: Cross multiply
    572.32x = 855.92 × 340.56
  4. Step 4: Simplify right side
    572.32x = 291,492.12
  5. Step 5: Solve for x
    x = 291,492.12/572.32
  6. Step 6: Final answer
    x = 509.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.