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Finding the Fourth Proportional to 607.51, 838.65 and 411.34

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Solution

The fourth proportional to 607.51, 838.65 and 411.34 is: 567.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.51 : 838.65 = 411.34 : x
  2. Step 2: Convert to fraction form
    607.51/838.65 = 411.34/x
  3. Step 3: Cross multiply
    607.51x = 838.65 × 411.34
  4. Step 4: Simplify right side
    607.51x = 344,970.29
  5. Step 5: Solve for x
    x = 344,970.29/607.51
  6. Step 6: Final answer
    x = 567.84

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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.