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Finding the Fourth Proportional to 802.53, 1,107.50 and 453.22

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Solution

The fourth proportional to 802.53, 1,107.50 and 453.22 is: 625.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.53 : 1,107.50 = 453.22 : x
  2. Step 2: Convert to fraction form
    802.53/1,107.50 = 453.22/x
  3. Step 3: Cross multiply
    802.53x = 1,107.50 × 453.22
  4. Step 4: Simplify right side
    802.53x = 501,941.15
  5. Step 5: Solve for x
    x = 501,941.15/802.53
  6. Step 6: Final answer
    x = 625.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.