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Finding the Fourth Proportional to 942.87, 1,415.52 and 510.33

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Solution

The fourth proportional to 942.87, 1,415.52 and 510.33 is: 766.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    942.87 : 1,415.52 = 510.33 : x
  2. Step 2: Convert to fraction form
    942.87/1,415.52 = 510.33/x
  3. Step 3: Cross multiply
    942.87x = 1,415.52 × 510.33
  4. Step 4: Simplify right side
    942.87x = 722,382.32
  5. Step 5: Solve for x
    x = 722,382.32/942.87
  6. Step 6: Final answer
    x = 766.15

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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.