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Finding the Fourth Proportional to 472.26, 705.37 and 407.46

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Solution

The fourth proportional to 472.26, 705.37 and 407.46 is: 608.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.26 : 705.37 = 407.46 : x
  2. Step 2: Convert to fraction form
    472.26/705.37 = 407.46/x
  3. Step 3: Cross multiply
    472.26x = 705.37 × 407.46
  4. Step 4: Simplify right side
    472.26x = 287,410.06
  5. Step 5: Solve for x
    x = 287,410.06/472.26
  6. Step 6: Final answer
    x = 608.58

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.