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Finding the Fourth Proportional to 570.09, 783.32 and 453.45

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Solution

The fourth proportional to 570.09, 783.32 and 453.45 is: 623.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.09 : 783.32 = 453.45 : x
  2. Step 2: Convert to fraction form
    570.09/783.32 = 453.45/x
  3. Step 3: Cross multiply
    570.09x = 783.32 × 453.45
  4. Step 4: Simplify right side
    570.09x = 355,194.19
  5. Step 5: Solve for x
    x = 355,194.19/570.09
  6. Step 6: Final answer
    x = 623.05

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.