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Finding the Fourth Proportional to 656.08, 904.82 and 469.22

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Solution

The fourth proportional to 656.08, 904.82 and 469.22 is: 647.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.08 : 904.82 = 469.22 : x
  2. Step 2: Convert to fraction form
    656.08/904.82 = 469.22/x
  3. Step 3: Cross multiply
    656.08x = 904.82 × 469.22
  4. Step 4: Simplify right side
    656.08x = 424,559.64
  5. Step 5: Solve for x
    x = 424,559.64/656.08
  6. Step 6: Final answer
    x = 647.12

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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.