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Finding the Fourth Proportional to 554.55, 765.26 and 302.47

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Solution

The fourth proportional to 554.55, 765.26 and 302.47 is: 417.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.55 : 765.26 = 302.47 : x
  2. Step 2: Convert to fraction form
    554.55/765.26 = 302.47/x
  3. Step 3: Cross multiply
    554.55x = 765.26 × 302.47
  4. Step 4: Simplify right side
    554.55x = 231,468.19
  5. Step 5: Solve for x
    x = 231,468.19/554.55
  6. Step 6: Final answer
    x = 417.40

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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.