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Finding the Fourth Proportional to 356.58, 531.30 and 340.85

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Solution

The fourth proportional to 356.58, 531.30 and 340.85 is: 507.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.58 : 531.30 = 340.85 : x
  2. Step 2: Convert to fraction form
    356.58/531.30 = 340.85/x
  3. Step 3: Cross multiply
    356.58x = 531.30 × 340.85
  4. Step 4: Simplify right side
    356.58x = 181,096.21
  5. Step 5: Solve for x
    x = 181,096.21/356.58
  6. Step 6: Final answer
    x = 507.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.