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Finding the Fourth Proportional to 573.10, 859.65 and 477.10

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Solution

The fourth proportional to 573.10, 859.65 and 477.10 is: 715.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.10 : 859.65 = 477.10 : x
  2. Step 2: Convert to fraction form
    573.10/859.65 = 477.10/x
  3. Step 3: Cross multiply
    573.10x = 859.65 × 477.10
  4. Step 4: Simplify right side
    573.10x = 410,139.02
  5. Step 5: Solve for x
    x = 410,139.02/573.10
  6. Step 6: Final answer
    x = 715.65

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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.