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Finding the Fourth Proportional to 572.76, 788.81 and 570.96

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Solution

The fourth proportional to 572.76, 788.81 and 570.96 is: 786.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.76 : 788.81 = 570.96 : x
  2. Step 2: Convert to fraction form
    572.76/788.81 = 570.96/x
  3. Step 3: Cross multiply
    572.76x = 788.81 × 570.96
  4. Step 4: Simplify right side
    572.76x = 450,376.10
  5. Step 5: Solve for x
    x = 450,376.10/572.76
  6. Step 6: Final answer
    x = 786.33

Related Problems

Find fourth proportional to 286.38, 394.40 and 285.48
Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.