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Finding the Fourth Proportional to 802.30, 1,203.45 and 744.70

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Solution

The fourth proportional to 802.30, 1,203.45 and 744.70 is: 1,117.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.30 : 1,203.45 = 744.70 : x
  2. Step 2: Convert to fraction form
    802.30/1,203.45 = 744.70/x
  3. Step 3: Cross multiply
    802.30x = 1,203.45 × 744.70
  4. Step 4: Simplify right side
    802.30x = 896,209.22
  5. Step 5: Solve for x
    x = 896,209.22/802.30
  6. Step 6: Final answer
    x = 1,117.05

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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.