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Finding the Fourth Proportional to 554.64, 765.69 and 430.02

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Solution

The fourth proportional to 554.64, 765.69 and 430.02 is: 593.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.64 : 765.69 = 430.02 : x
  2. Step 2: Convert to fraction form
    554.64/765.69 = 430.02/x
  3. Step 3: Cross multiply
    554.64x = 765.69 × 430.02
  4. Step 4: Simplify right side
    554.64x = 329,258.19
  5. Step 5: Solve for x
    x = 329,258.19/554.64
  6. Step 6: Final answer
    x = 593.65

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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.