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Finding the Fourth Proportional to 1,567.58, 2,351.35 and 471.90

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Solution

The fourth proportional to 1,567.58, 2,351.35 and 471.90 is: 707.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,567.58 : 2,351.35 = 471.90 : x
  2. Step 2: Convert to fraction form
    1,567.58/2,351.35 = 471.90/x
  3. Step 3: Cross multiply
    1,567.58x = 2,351.35 × 471.90
  4. Step 4: Simplify right side
    1,567.58x = 1,109,602.07
  5. Step 5: Solve for x
    x = 1,109,602.07/1,567.58
  6. Step 6: Final answer
    x = 707.84

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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.