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Finding the Fourth Proportional to 565.07, 780.58 and 535.51

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Solution

The fourth proportional to 565.07, 780.58 and 535.51 is: 739.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.07 : 780.58 = 535.51 : x
  2. Step 2: Convert to fraction form
    565.07/780.58 = 535.51/x
  3. Step 3: Cross multiply
    565.07x = 780.58 × 535.51
  4. Step 4: Simplify right side
    565.07x = 418,008.40
  5. Step 5: Solve for x
    x = 418,008.40/565.07
  6. Step 6: Final answer
    x = 739.75

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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.