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Finding the Fourth Proportional to 925.63, 1,388.44 and 348.10

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Solution

The fourth proportional to 925.63, 1,388.44 and 348.10 is: 522.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.63 : 1,388.44 = 348.10 : x
  2. Step 2: Convert to fraction form
    925.63/1,388.44 = 348.10/x
  3. Step 3: Cross multiply
    925.63x = 1,388.44 × 348.10
  4. Step 4: Simplify right side
    925.63x = 483,315.96
  5. Step 5: Solve for x
    x = 483,315.96/925.63
  6. Step 6: Final answer
    x = 522.15

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Double scale
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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.