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Finding the Fourth Proportional to 364.64, 547.12 and 148.40

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Solution

The fourth proportional to 364.64, 547.12 and 148.40 is: 222.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.64 : 547.12 = 148.40 : x
  2. Step 2: Convert to fraction form
    364.64/547.12 = 148.40/x
  3. Step 3: Cross multiply
    364.64x = 547.12 × 148.40
  4. Step 4: Simplify right side
    364.64x = 81,192.61
  5. Step 5: Solve for x
    x = 81,192.61/364.64
  6. Step 6: Final answer
    x = 222.67

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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.