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Finding the Fourth Proportional to 1,332.93, 1,998.63 and 510.87

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Solution

The fourth proportional to 1,332.93, 1,998.63 and 510.87 is: 766.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332.93 : 1,998.63 = 510.87 : x
  2. Step 2: Convert to fraction form
    1,332.93/1,998.63 = 510.87/x
  3. Step 3: Cross multiply
    1,332.93x = 1,998.63 × 510.87
  4. Step 4: Simplify right side
    1,332.93x = 1,021,040.11
  5. Step 5: Solve for x
    x = 1,021,040.11/1,332.93
  6. Step 6: Final answer
    x = 766.01

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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.