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Finding the Fourth Proportional to 785.15, 1,177.51 and 373.46

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Solution

The fourth proportional to 785.15, 1,177.51 and 373.46 is: 560.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    785.15 : 1,177.51 = 373.46 : x
  2. Step 2: Convert to fraction form
    785.15/1,177.51 = 373.46/x
  3. Step 3: Cross multiply
    785.15x = 1,177.51 × 373.46
  4. Step 4: Simplify right side
    785.15x = 439,754.89
  5. Step 5: Solve for x
    x = 439,754.89/785.15
  6. Step 6: Final answer
    x = 560.09

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1.5x scale

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.