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Finding the Fourth Proportional to 1,625.21, 2,438.26 and 529.64

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Solution

The fourth proportional to 1,625.21, 2,438.26 and 529.64 is: 794.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,625.21 : 2,438.26 = 529.64 : x
  2. Step 2: Convert to fraction form
    1,625.21/2,438.26 = 529.64/x
  3. Step 3: Cross multiply
    1,625.21x = 2,438.26 × 529.64
  4. Step 4: Simplify right side
    1,625.21x = 1,291,385.19
  5. Step 5: Solve for x
    x = 1,291,385.19/1,625.21
  6. Step 6: Final answer
    x = 794.60

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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.