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Finding the Fourth Proportional to 907.84, 1,253.09 and 592.55

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Solution

The fourth proportional to 907.84, 1,253.09 and 592.55 is: 817.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.84 : 1,253.09 = 592.55 : x
  2. Step 2: Convert to fraction form
    907.84/1,253.09 = 592.55/x
  3. Step 3: Cross multiply
    907.84x = 1,253.09 × 592.55
  4. Step 4: Simplify right side
    907.84x = 742,518.39
  5. Step 5: Solve for x
    x = 742,518.39/907.84
  6. Step 6: Final answer
    x = 817.89

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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.