Home / 10.05-15.07-4.70

Finding the Fourth Proportional to 10.05, 15.07 and 4.70

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Solution

The fourth proportional to 10.05, 15.07 and 4.70 is: 7.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10.05 : 15.07 = 4.70 : x
  2. Step 2: Convert to fraction form
    10.05/15.07 = 4.70/x
  3. Step 3: Cross multiply
    10.05x = 15.07 × 4.70
  4. Step 4: Simplify right side
    10.05x = 70.83
  5. Step 5: Solve for x
    x = 70.83/10.05
  6. Step 6: Final answer
    x = 7.05

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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.