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Finding the Fourth Proportional to 469.27, 705.42 and 435.45

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Solution

The fourth proportional to 469.27, 705.42 and 435.45 is: 654.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.27 : 705.42 = 435.45 : x
  2. Step 2: Convert to fraction form
    469.27/705.42 = 435.45/x
  3. Step 3: Cross multiply
    469.27x = 705.42 × 435.45
  4. Step 4: Simplify right side
    469.27x = 307,173.00
  5. Step 5: Solve for x
    x = 307,173.00/469.27
  6. Step 6: Final answer
    x = 654.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.