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Finding the Fourth Proportional to 907.33, 1,362.81 and 542.83

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Solution

The fourth proportional to 907.33, 1,362.81 and 542.83 is: 815.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.33 : 1,362.81 = 542.83 : x
  2. Step 2: Convert to fraction form
    907.33/1,362.81 = 542.83/x
  3. Step 3: Cross multiply
    907.33x = 1,362.81 × 542.83
  4. Step 4: Simplify right side
    907.33x = 739,774.15
  5. Step 5: Solve for x
    x = 739,774.15/907.33
  6. Step 6: Final answer
    x = 815.33

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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.