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Finding the Fourth Proportional to 1,089.81, 1,503.93 and 592.45

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Solution

The fourth proportional to 1,089.81, 1,503.93 and 592.45 is: 817.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089.81 : 1,503.93 = 592.45 : x
  2. Step 2: Convert to fraction form
    1,089.81/1,503.93 = 592.45/x
  3. Step 3: Cross multiply
    1,089.81x = 1,503.93 × 592.45
  4. Step 4: Simplify right side
    1,089.81x = 891,003.33
  5. Step 5: Solve for x
    x = 891,003.33/1,089.81
  6. Step 6: Final answer
    x = 817.58

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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.