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Finding the Fourth Proportional to 1,555.90, 2,333.56 and 460.01

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Solution

The fourth proportional to 1,555.90, 2,333.56 and 460.01 is: 689.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.90 : 2,333.56 = 460.01 : x
  2. Step 2: Convert to fraction form
    1,555.90/2,333.56 = 460.01/x
  3. Step 3: Cross multiply
    1,555.90x = 2,333.56 × 460.01
  4. Step 4: Simplify right side
    1,555.90x = 1,073,460.94
  5. Step 5: Solve for x
    x = 1,073,460.94/1,555.90
  6. Step 6: Final answer
    x = 689.93

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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.