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Finding the Fourth Proportional to 1,555.84, 2,333.32 and 581.40

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Solution

The fourth proportional to 1,555.84, 2,333.32 and 581.40 is: 871.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.84 : 2,333.32 = 581.40 : x
  2. Step 2: Convert to fraction form
    1,555.84/2,333.32 = 581.40/x
  3. Step 3: Cross multiply
    1,555.84x = 2,333.32 × 581.40
  4. Step 4: Simplify right side
    1,555.84x = 1,356,592.25
  5. Step 5: Solve for x
    x = 1,356,592.25/1,555.84
  6. Step 6: Final answer
    x = 871.94

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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.