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Finding the Fourth Proportional to 608.95, 912.08 and 471.55

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Solution

The fourth proportional to 608.95, 912.08 and 471.55 is: 706.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.95 : 912.08 = 471.55 : x
  2. Step 2: Convert to fraction form
    608.95/912.08 = 471.55/x
  3. Step 3: Cross multiply
    608.95x = 912.08 × 471.55
  4. Step 4: Simplify right side
    608.95x = 430,088.97
  5. Step 5: Solve for x
    x = 430,088.97/608.95
  6. Step 6: Final answer
    x = 706.28

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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.