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Finding the Fourth Proportional to 1,652.74, 2,479.04 and 612.32

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Solution

The fourth proportional to 1,652.74, 2,479.04 and 612.32 is: 918.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,652.74 : 2,479.04 = 612.32 : x
  2. Step 2: Convert to fraction form
    1,652.74/2,479.04 = 612.32/x
  3. Step 3: Cross multiply
    1,652.74x = 2,479.04 × 612.32
  4. Step 4: Simplify right side
    1,652.74x = 1,517,973.50
  5. Step 5: Solve for x
    x = 1,517,973.50/1,652.74
  6. Step 6: Final answer
    x = 918.46

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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.