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Finding the Fourth Proportional to 607.68, 838.56 and 358.96

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Solution

The fourth proportional to 607.68, 838.56 and 358.96 is: 495.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.68 : 838.56 = 358.96 : x
  2. Step 2: Convert to fraction form
    607.68/838.56 = 358.96/x
  3. Step 3: Cross multiply
    607.68x = 838.56 × 358.96
  4. Step 4: Simplify right side
    607.68x = 301,009.50
  5. Step 5: Solve for x
    x = 301,009.50/607.68
  6. Step 6: Final answer
    x = 495.34

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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.