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Finding the Fourth Proportional to 615.07, 848.81 and 482.45

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Solution

The fourth proportional to 615.07, 848.81 and 482.45 is: 665.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.07 : 848.81 = 482.45 : x
  2. Step 2: Convert to fraction form
    615.07/848.81 = 482.45/x
  3. Step 3: Cross multiply
    615.07x = 848.81 × 482.45
  4. Step 4: Simplify right side
    615.07x = 409,508.38
  5. Step 5: Solve for x
    x = 409,508.38/615.07
  6. Step 6: Final answer
    x = 665.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.