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Finding the Fourth Proportional to 1,765.48, 2,643.02 and 930.56

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Solution

The fourth proportional to 1,765.48, 2,643.02 and 930.56 is: 1,393.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,765.48 : 2,643.02 = 930.56 : x
  2. Step 2: Convert to fraction form
    1,765.48/2,643.02 = 930.56/x
  3. Step 3: Cross multiply
    1,765.48x = 2,643.02 × 930.56
  4. Step 4: Simplify right side
    1,765.48x = 2,459,488.69
  5. Step 5: Solve for x
    x = 2,459,488.69/1,765.48
  6. Step 6: Final answer
    x = 1,393.10

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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.