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Finding the Fourth Proportional to 501.39, 751.51 and 251.10

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Solution

The fourth proportional to 501.39, 751.51 and 251.10 is: 376.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.39 : 751.51 = 251.10 : x
  2. Step 2: Convert to fraction form
    501.39/751.51 = 251.10/x
  3. Step 3: Cross multiply
    501.39x = 751.51 × 251.10
  4. Step 4: Simplify right side
    501.39x = 188,704.16
  5. Step 5: Solve for x
    x = 188,704.16/501.39
  6. Step 6: Final answer
    x = 376.36

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.