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Finding the Fourth Proportional to 1,409.54, 2,114.58 and 435.47

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Solution

The fourth proportional to 1,409.54, 2,114.58 and 435.47 is: 653.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409.54 : 2,114.58 = 435.47 : x
  2. Step 2: Convert to fraction form
    1,409.54/2,114.58 = 435.47/x
  3. Step 3: Cross multiply
    1,409.54x = 2,114.58 × 435.47
  4. Step 4: Simplify right side
    1,409.54x = 920,836.15
  5. Step 5: Solve for x
    x = 920,836.15/1,409.54
  6. Step 6: Final answer
    x = 653.29

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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.