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Finding the Fourth Proportional to 292.83, 438.71 and 148.38

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Solution

The fourth proportional to 292.83, 438.71 and 148.38 is: 222.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.83 : 438.71 = 148.38 : x
  2. Step 2: Convert to fraction form
    292.83/438.71 = 148.38/x
  3. Step 3: Cross multiply
    292.83x = 438.71 × 148.38
  4. Step 4: Simplify right side
    292.83x = 65,095.05
  5. Step 5: Solve for x
    x = 65,095.05/292.83
  6. Step 6: Final answer
    x = 222.30

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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.