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Finding the Fourth Proportional to 2,430.92, 3,646.40 and 699.56

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Solution

The fourth proportional to 2,430.92, 3,646.40 and 699.56 is: 1,049.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,430.92 : 3,646.40 = 699.56 : x
  2. Step 2: Convert to fraction form
    2,430.92/3,646.40 = 699.56/x
  3. Step 3: Cross multiply
    2,430.92x = 3,646.40 × 699.56
  4. Step 4: Simplify right side
    2,430.92x = 2,550,875.58
  5. Step 5: Solve for x
    x = 2,550,875.58/2,430.92
  6. Step 6: Final answer
    x = 1,049.35

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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.