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Finding the Fourth Proportional to 397.58, 595.49 and 305.60

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Solution

The fourth proportional to 397.58, 595.49 and 305.60 is: 457.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.58 : 595.49 = 305.60 : x
  2. Step 2: Convert to fraction form
    397.58/595.49 = 305.60/x
  3. Step 3: Cross multiply
    397.58x = 595.49 × 305.60
  4. Step 4: Simplify right side
    397.58x = 181,981.74
  5. Step 5: Solve for x
    x = 181,981.74/397.58
  6. Step 6: Final answer
    x = 457.72

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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.