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Finding the Fourth Proportional to 1,166.40, 1,750.21 and 436.19

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Solution

The fourth proportional to 1,166.40, 1,750.21 and 436.19 is: 654.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,166.40 : 1,750.21 = 436.19 : x
  2. Step 2: Convert to fraction form
    1,166.40/1,750.21 = 436.19/x
  3. Step 3: Cross multiply
    1,166.40x = 1,750.21 × 436.19
  4. Step 4: Simplify right side
    1,166.40x = 763,414.26
  5. Step 5: Solve for x
    x = 763,414.26/1,166.40
  6. Step 6: Final answer
    x = 654.50

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Double scale
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1.5x scale

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.