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Finding the Fourth Proportional to 384.66, 575.60 and 247.05

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Solution

The fourth proportional to 384.66, 575.60 and 247.05 is: 369.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.66 : 575.60 = 247.05 : x
  2. Step 2: Convert to fraction form
    384.66/575.60 = 247.05/x
  3. Step 3: Cross multiply
    384.66x = 575.60 × 247.05
  4. Step 4: Simplify right side
    384.66x = 142,200.74
  5. Step 5: Solve for x
    x = 142,200.74/384.66
  6. Step 6: Final answer
    x = 369.68

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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.