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Finding the Fourth Proportional to 557.23, 835.62 and 435.64

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Solution

The fourth proportional to 557.23, 835.62 and 435.64 is: 653.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.23 : 835.62 = 435.64 : x
  2. Step 2: Convert to fraction form
    557.23/835.62 = 435.64/x
  3. Step 3: Cross multiply
    557.23x = 835.62 × 435.64
  4. Step 4: Simplify right side
    557.23x = 364,029.50
  5. Step 5: Solve for x
    x = 364,029.50/557.23
  6. Step 6: Final answer
    x = 653.28

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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.