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Finding the Fourth Proportional to 802.35, 1,201.61 and 436.23

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Solution

The fourth proportional to 802.35, 1,201.61 and 436.23 is: 653.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.35 : 1,201.61 = 436.23 : x
  2. Step 2: Convert to fraction form
    802.35/1,201.61 = 436.23/x
  3. Step 3: Cross multiply
    802.35x = 1,201.61 × 436.23
  4. Step 4: Simplify right side
    802.35x = 524,179.15
  5. Step 5: Solve for x
    x = 524,179.15/802.35
  6. Step 6: Final answer
    x = 653.30

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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.