Home / 1,055.19-1,582.95-397.12

Finding the Fourth Proportional to 1,055.19, 1,582.95 and 397.12

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Solution

The fourth proportional to 1,055.19, 1,582.95 and 397.12 is: 595.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,055.19 : 1,582.95 = 397.12 : x
  2. Step 2: Convert to fraction form
    1,055.19/1,582.95 = 397.12/x
  3. Step 3: Cross multiply
    1,055.19x = 1,582.95 × 397.12
  4. Step 4: Simplify right side
    1,055.19x = 628,621.10
  5. Step 5: Solve for x
    x = 628,621.10/1,055.19
  6. Step 6: Final answer
    x = 595.74

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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.