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Finding the Fourth Proportional to 1,007.13, 1,509.73 and 357.51

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Solution

The fourth proportional to 1,007.13, 1,509.73 and 357.51 is: 535.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007.13 : 1,509.73 = 357.51 : x
  2. Step 2: Convert to fraction form
    1,007.13/1,509.73 = 357.51/x
  3. Step 3: Cross multiply
    1,007.13x = 1,509.73 × 357.51
  4. Step 4: Simplify right side
    1,007.13x = 539,743.57
  5. Step 5: Solve for x
    x = 539,743.57/1,007.13
  6. Step 6: Final answer
    x = 535.92

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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.