Home / 1,385.02-2,077.52-345.02

Finding the Fourth Proportional to 1,385.02, 2,077.52 and 345.02

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Solution

The fourth proportional to 1,385.02, 2,077.52 and 345.02 is: 517.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385.02 : 2,077.52 = 345.02 : x
  2. Step 2: Convert to fraction form
    1,385.02/2,077.52 = 345.02/x
  3. Step 3: Cross multiply
    1,385.02x = 2,077.52 × 345.02
  4. Step 4: Simplify right side
    1,385.02x = 716,785.95
  5. Step 5: Solve for x
    x = 716,785.95/1,385.02
  6. Step 6: Final answer
    x = 517.53

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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.