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Finding the Fourth Proportional to 1,484, 2,225.64 and 443.76

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Solution

The fourth proportional to 1,484, 2,225.64 and 443.76 is: 665.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,484 : 2,225.64 = 443.76 : x
  2. Step 2: Convert to fraction form
    1,484/2,225.64 = 443.76/x
  3. Step 3: Cross multiply
    1,484x = 2,225.64 × 443.76
  4. Step 4: Simplify right side
    1,484x = 987,650.01
  5. Step 5: Solve for x
    x = 987,650.01/1,484
  6. Step 6: Final answer
    x = 665.53

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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.