Home / 1,323.37-1,985.18-457.57

Finding the Fourth Proportional to 1,323.37, 1,985.18 and 457.57

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Solution

The fourth proportional to 1,323.37, 1,985.18 and 457.57 is: 686.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.37 : 1,985.18 = 457.57 : x
  2. Step 2: Convert to fraction form
    1,323.37/1,985.18 = 457.57/x
  3. Step 3: Cross multiply
    1,323.37x = 1,985.18 × 457.57
  4. Step 4: Simplify right side
    1,323.37x = 908,348.89
  5. Step 5: Solve for x
    x = 908,348.89/1,323.37
  6. Step 6: Final answer
    x = 686.39

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1.5x scale

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.