Home / 1,165.32-1,746.72-515.16

Finding the Fourth Proportional to 1,165.32, 1,746.72 and 515.16

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Solution

The fourth proportional to 1,165.32, 1,746.72 and 515.16 is: 772.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,165.32 : 1,746.72 = 515.16 : x
  2. Step 2: Convert to fraction form
    1,165.32/1,746.72 = 515.16/x
  3. Step 3: Cross multiply
    1,165.32x = 1,746.72 × 515.16
  4. Step 4: Simplify right side
    1,165.32x = 899,840.28
  5. Step 5: Solve for x
    x = 899,840.28/1,165.32
  6. Step 6: Final answer
    x = 772.18

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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.