Home / 1,155.76-1,733.28-386.08

Finding the Fourth Proportional to 1,155.76, 1,733.28 and 386.08

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Solution

The fourth proportional to 1,155.76, 1,733.28 and 386.08 is: 579.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155.76 : 1,733.28 = 386.08 : x
  2. Step 2: Convert to fraction form
    1,155.76/1,733.28 = 386.08/x
  3. Step 3: Cross multiply
    1,155.76x = 1,733.28 × 386.08
  4. Step 4: Simplify right side
    1,155.76x = 669,184.74
  5. Step 5: Solve for x
    x = 669,184.74/1,155.76
  6. Step 6: Final answer
    x = 579.00

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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.