Home / 1,051.20-1,574.66-501.72

Finding the Fourth Proportional to 1,051.20, 1,574.66 and 501.72

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Solution

The fourth proportional to 1,051.20, 1,574.66 and 501.72 is: 751.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,051.20 : 1,574.66 = 501.72 : x
  2. Step 2: Convert to fraction form
    1,051.20/1,574.66 = 501.72/x
  3. Step 3: Cross multiply
    1,051.20x = 1,574.66 × 501.72
  4. Step 4: Simplify right side
    1,051.20x = 790,038.42
  5. Step 5: Solve for x
    x = 790,038.42/1,051.20
  6. Step 6: Final answer
    x = 751.56

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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.