Home / 1,055.48-1,583.40-397.30

Finding the Fourth Proportional to 1,055.48, 1,583.40 and 397.30

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Solution

The fourth proportional to 1,055.48, 1,583.40 and 397.30 is: 596.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,055.48 : 1,583.40 = 397.30 : x
  2. Step 2: Convert to fraction form
    1,055.48/1,583.40 = 397.30/x
  3. Step 3: Cross multiply
    1,055.48x = 1,583.40 × 397.30
  4. Step 4: Simplify right side
    1,055.48x = 629,084.82
  5. Step 5: Solve for x
    x = 629,084.82/1,055.48
  6. Step 6: Final answer
    x = 596.02

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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.