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Finding the Fourth Proportional to 472.92, 703.83 and 455.64

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Solution

The fourth proportional to 472.92, 703.83 and 455.64 is: 678.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.92 : 703.83 = 455.64 : x
  2. Step 2: Convert to fraction form
    472.92/703.83 = 455.64/x
  3. Step 3: Cross multiply
    472.92x = 703.83 × 455.64
  4. Step 4: Simplify right side
    472.92x = 320,693.10
  5. Step 5: Solve for x
    x = 320,693.10/472.92
  6. Step 6: Final answer
    x = 678.11

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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.