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Finding the Fourth Proportional to 860.02, 1,187.13 and 510.71

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Solution

The fourth proportional to 860.02, 1,187.13 and 510.71 is: 704.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    860.02 : 1,187.13 = 510.71 : x
  2. Step 2: Convert to fraction form
    860.02/1,187.13 = 510.71/x
  3. Step 3: Cross multiply
    860.02x = 1,187.13 × 510.71
  4. Step 4: Simplify right side
    860.02x = 606,273.23
  5. Step 5: Solve for x
    x = 606,273.23/860.02
  6. Step 6: Final answer
    x = 704.96

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.