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Finding the Fourth Proportional to 951.08, 1,426.59 and 438.08

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Solution

The fourth proportional to 951.08, 1,426.59 and 438.08 is: 657.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.08 : 1,426.59 = 438.08 : x
  2. Step 2: Convert to fraction form
    951.08/1,426.59 = 438.08/x
  3. Step 3: Cross multiply
    951.08x = 1,426.59 × 438.08
  4. Step 4: Simplify right side
    951.08x = 624,954.51
  5. Step 5: Solve for x
    x = 624,954.51/951.08
  6. Step 6: Final answer
    x = 657.10

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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.