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Finding the Fourth Proportional to 1,450.61, 2,176.32 and 477.40

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Solution

The fourth proportional to 1,450.61, 2,176.32 and 477.40 is: 716.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,450.61 : 2,176.32 = 477.40 : x
  2. Step 2: Convert to fraction form
    1,450.61/2,176.32 = 477.40/x
  3. Step 3: Cross multiply
    1,450.61x = 2,176.32 × 477.40
  4. Step 4: Simplify right side
    1,450.61x = 1,038,975.17
  5. Step 5: Solve for x
    x = 1,038,975.17/1,450.61
  6. Step 6: Final answer
    x = 716.23

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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.