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Finding the Fourth Proportional to 1,870.50, 2,805.75 and 571.95

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Solution

The fourth proportional to 1,870.50, 2,805.75 and 571.95 is: 857.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,870.50 : 2,805.75 = 571.95 : x
  2. Step 2: Convert to fraction form
    1,870.50/2,805.75 = 571.95/x
  3. Step 3: Cross multiply
    1,870.50x = 2,805.75 × 571.95
  4. Step 4: Simplify right side
    1,870.50x = 1,604,748.71
  5. Step 5: Solve for x
    x = 1,604,748.71/1,870.50
  6. Step 6: Final answer
    x = 857.93

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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.