Home / 1,055.18-1,582.58-285.50

Finding the Fourth Proportional to 1,055.18, 1,582.58 and 285.50

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Solution

The fourth proportional to 1,055.18, 1,582.58 and 285.50 is: 428.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,055.18 : 1,582.58 = 285.50 : x
  2. Step 2: Convert to fraction form
    1,055.18/1,582.58 = 285.50/x
  3. Step 3: Cross multiply
    1,055.18x = 1,582.58 × 285.50
  4. Step 4: Simplify right side
    1,055.18x = 451,826.59
  5. Step 5: Solve for x
    x = 451,826.59/1,055.18
  6. Step 6: Final answer
    x = 428.20

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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.