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Finding the Fourth Proportional to 555.02, 765.13 and 436.79

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Solution

The fourth proportional to 555.02, 765.13 and 436.79 is: 602.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.02 : 765.13 = 436.79 : x
  2. Step 2: Convert to fraction form
    555.02/765.13 = 436.79/x
  3. Step 3: Cross multiply
    555.02x = 765.13 × 436.79
  4. Step 4: Simplify right side
    555.02x = 334,196.22
  5. Step 5: Solve for x
    x = 334,196.22/555.02
  6. Step 6: Final answer
    x = 602.14

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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.