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Finding the Fourth Proportional to 569.51, 854.41 and 309.45

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Solution

The fourth proportional to 569.51, 854.41 and 309.45 is: 464.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.51 : 854.41 = 309.45 : x
  2. Step 2: Convert to fraction form
    569.51/854.41 = 309.45/x
  3. Step 3: Cross multiply
    569.51x = 854.41 × 309.45
  4. Step 4: Simplify right side
    569.51x = 264,397.17
  5. Step 5: Solve for x
    x = 264,397.17/569.51
  6. Step 6: Final answer
    x = 464.25

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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.